Filing machine or jig saw



1,636,729 July B. A. YARRINGTON FILING MACHINE OR JIG SAW Filed April 2. 1926 3 Sheets-Sheet 2 Benson 4. larr/ngfon 1,636,729 July 1927' B. A. YARRINGTON FILING MACHINE 0R JIG SAW Filed April 2. 1926 3 Sheets-Sheet 3 Shun "to l Benson Fl. Yarrin Ion Patented July 26, 1927.

"UNITED STATES PATENT e s-e.

BENSON, A. .YARRINGTON," or GRAND perms, ama can.

FILING -1mm11a 0. a J26: SA

Application-area April 2, 1926. "Serial no. 99,409.

[ion of file or saw is-mafintainedm Second, to providefsuchan improved movement which is readily capable -'of1 1O justmentto and ifromperpendiculan Third, to provide an 1 improved guiding ll'lBfIHSf0l-'-tll6 file or sa-wlclamps.

Fourth, to-provide an improved meansor 15 and advanci g-it to'th'e work. I

Objeets pertaining to details and economies of construction-and operation ;w'ill'ap'-' pear from the detailed description to fol low. The intention' is defined'and pointed out in the claims. A structure which is a'preferredembodiment of my invention is illustrated' inthe accompanying drawing, forming apart of this specification, in which: 3

Fig. I is Y a side elevation view "from right hand side of themach-ina' 4 Fig. II isan enlarged detail s'ideelevation View partially in section, taken onthe irregular section line '22 ofiFig. HI,- show- Iifi ing various details, a portion of the case being broken away to show details of construction and operation.

Fig. III is a detail sectional view on irregular line 33 of Figs. I, II and IV,

1 certain parts being shown in full lines for the sake of clearness.

Fig. IV is an enlarged detail sectional plan taken on the irregular plane defined by lines 4% in Figs. I, II, III, and V.

1" F ig. V is an enlarged detail view of the parallel arms and supporting means-appearing in Fig. II considerably enlarged, the adjustment thereof being indicated by dotted lines.

Fig. VI is an enlarged detail sectional View on the plane indicated by the irregular line -66 of Figs. III and IV, showing details of the mechanism for relieving the file or saw on the return stroke and of forcing 50 to the work.

Fig. VII is an enlarged detail sectional view, certain parts being shown in full lines. of the upper saw or file clamp and guiding means, taken on a line corresponding to line 77 of Fig. III.

In the drawing all of the sectional views the relieving the'file' or saw onitsretum'stmke are taken looking in the direction of the little arrows at the ends-of the sectionlines, and similar numerals oi -reference refer to similar parts-throughout. the several views. 'fieferli'lig ee "numbered parts of the drawing, 1 is the base, 2 is the -ma in supporting arng', aqidfithe tiltin-g't-able which ma be of any usual-or desired form. 4 is theup'per 'file orsaw' cla'mp, 5 isthe" lower saw or file clamp-which engage and support between themthefiie or saw 16,

i 'Io't'he upper clamp 4 is'seenred the horizontal arm 6 by the pivot ti iand to the lower saw clam-p'is secured the horizontal arm 7 by pivot 7,-these arm s'G and '7 being arranged inpara'vllel position and carried at theirrearends bythe cross-Shaped cross support 8, arm -6 being supported by pivot 9 and arm 7by-pivot '10." 1

- A cross arm 11 is connected in parallel relation to the cross piece8 by 'pivots 12 and 13 at the'n rand-tower ai'rri'respectively.

:-a ;mm11ei link 14 is disposed parallel to the arm Sand ise nneeted-at its-rear end by pivot 15 to the 'npper end ofthe crossarm 11 and at its forward end by pivot 14' to the-npper'e-l'amp 4. 1

The rear ended? thehorizontal cross arm of the cross piece 8 is supported on the vertical link -17 which is -pivoted'to the .arm 2 by'the' pivot screw"1{8"and p-i'votally con nected at *19 to-the said "horizontally extending arm. y

Horizontal link -20 -is pivoted at its rear end at 18 and an npiiglit link 21 which is parallel to the link '17 is pi-vota'lly connected to the horizontal link-2O at 22 at. its lower end-and by the pivot '23 to the forwardly extending arm of the .cross piece The iorward end .ef t-he link 20 contains slot 24. Arracl justabfle disk is disposed backof the link--20 "having a wrist pin within the slot- 24 for adjustment.

The disk -25 is carried by the short shaft 27 which carries -worm gear28 on the outer side of the arm 2see igs. I and IV. This worm gear -28 is adjustable by .the worm 29 which 'is supported' in a pair of brackets 30,30. The worm 2'8is for adjnstlnent. It is actuated by the spindle 31 which is provided with-lmnd-wh'eel 32' at. the front of the machine. An indicating dial 33',:ee Figs. I and II, is provided-to show the ad- ]ustmen't.

Upper clamp-"5i is provided with a guiding shawl; or bar 34 which plays freely in the lOO at wf e F ge-Vl z. a, similarclamgmeans ispro fded;

' scribed s protected by an-apron 78, the end There is .a fixed, jaw,4 1,-,at-gthe.-lower lend of 'the. clamp lwhieh cooperates ,avithi .the ot le? ie JA- v i cha si mfll Di e r f lcrumqd'. a ;.andl -z or ed Q .PIO qn: met-s w-iess sfia VIL shank 45 t which ,is driven ,jirom the disk 46 y m ns o ev pi m n' #7 mnne t h r to bythe, pivot 48 atiits upper: end QL Ld'COU? nected to the said disk lfi by;. theadjustable Pin'1 9hy wh ch-mea s-the st e' f-z the, filerlfif or, saw, ,when. thesawfds used; is regulated...Y'IJhe-shank dais'jcarried by the; slide 50 which is connectedthereto byiia" lateral-arm onuhracket 51; madeintegral therewith .Thisi slide; 504s carried .in-' the. movableslide way 5,2 which is carried am the;

VI, whichjs secured tp theqbaseiby adjust ing bolts 54, 54;, disposed in transverse slots? l an flettbdii ine .,in-E g-z V1.1 The adjustable slideway is -retainedbn the support, by the lug-55 .ajt 'thegbottom there- VJIHQPUIYEJ: J: I! "2? l l The upper end; ofthe support 03; carries the spring bracket 56 which-.is-secured thereto by the screw57 .and carries acollar 58 at its outer end. This collar supports the spindle '31 of the'adjusting \vorm, springs 59 and 60 being disposed on-the opposite sides of the collar 58 and beingretained in position by the collar 61, 62, whi ch permits slight elastic adjustment of the said support 53. v V

The adjustable slideway 552 is forced to one side of'the support by means of a pair of coiled springs 63 disposed in horizontal sockets or bores 64: in the wall of the 'sup-' port 53, the tension of the springsbeing adj ustable by the set screws 65. f

On the opposite side are disposed a pair of cam levers 66 pivoted in the support '53 by the pivots 67, the outer ends of which levers are connected 7 together by bar. 68 pivotally comiccted thereto in parallel relation at 69-69. The bar 68 'is'provided with a screw pin 70 at its lower end which is acted u on by the lever 71 which is slotted at 70 or the engagement of said screw 70. The opposite end of the lever carries a roller 73 journaled on the screw journal 74 and ontheup stroke the projecting portion 75 of 'the'aiii act's'ilpon the roller throwing the structures into tl iedotted positions indicated in Fig. VI, which, of course, relieves the file 1.6..by moving it, towards the rear of the machine.1 The entire structure, owing to its connections, accommodatesv itself to this movement. On the-down stroke the file 'advances. to, the work, as .will j-be readily under- Q -AEUM- A shield 771 i s disposed ,over the pivotal conn dion 7f; of the arm to. the lower clamp .5. The oscillating mechanism just deof,which is secured at 7 9-to, the reciprocating slide 52 andisjdisposed.over a horizontal 191161; 8Q, 81-,above,. the said mechanism and exterrdsdownwaidly on the outside where it is connectedbysprings. 82- to .the lower operation .and-.-;t11 relieving of. the file or saw on its upstrokea has alreadybeeii explained.,- f-The' adjustment-thereof from a vertical'to a slight incline is accomplished by the manipulation of the hand wheel 32 whichgacts through the worm 29 upon the \vorm gear 28,}adjusting-the disk 25 to its wrist pin 26 in the -slot-ixiof the-link 20. This shiftsthe, angle of the cross armsupport 8 and actsjthrough' thearnr? upon the lower clamp {5, adj listing ,the angle thereof accordingly,thedupper portions, being in parallel- ErelatiOn, =move correspondingly. When this-is done it: is necessary to free the bolts 54,- 54-so-that the support 53 may accommodate itself thereon. The springs 5t) and 60,011 the spindle 31 adjusttilfi'lllSClYtS to accommodate the slight movement required. When the adjustment is completed of course the bolts 54, 54 are tightened.

The machine is driven by a pulley 83 or it .may be driven directly by an electric motor.

.I-have-described my improved filing or jig saw machine in its approved form.

I desireto state, however, that it can be considerably variedin its details withoutdeparting from my invention. The structure would operate very well without tinadjustmentto and from the perpendicular which I have described. \Vhen operated as a saw there is no necessity for relieving the saw 'or file on the upstroke which is especially desirable when a hack saw is use-.2. F ro nthesestatements the modifications will be readily understood in this behalf.

Having thus described my invention, what I claim as new and'desir'e to secure by Letters Patent, is:

1. In a structure of the class described,

Ill-ll ll i llii) the combination with a suitable base and rigid supporting frame arm, of upper and lower clanrps, parallel arms extendin from the said clamps and connected at their rear ends by a cross-shaped connecting arm, a.

vertical upwardly projecting arm parallel to the cross-shaped connecting arm with a parallel link connecting the upper end thereof to the said upper clamp, a horizontal link slotted at its forward end disposed parallel to the cross arm of the said connecting arm and pivoted at .its rear end to the said frame arm, upwardly extending parallel links connecting the cross portion of the said cross-arm to the said horizontal link, an adjusting disk with a wrist pin engaging the said slot supported on a suitable shaft stub in the-said frame arm, a worm gear on the said shaft, a worm' for ad usting the same with ail-axially disposed rod extending tothefront of the said machine, a vertical guidingl-mcess in the up 1' end of the said frame arm, aguiding s ideway adjustable therein, a slide bar for the Said upper clamp playing freely in the said adjustable slideway, .a spring holding said slide bar yieldingly towards the front of the machine, a downwardly depending shank from the said lower clamp, a driving disk with a peripheral cam and adjustable wrist pin, .a pitman connecting the said wrist pin to the said shank, a slide connected to the said shank, a yieldingly adjustable slideway, a support for the said slideway adjustahly connected to the interior of said machine, springs for holding the said slideway yieldingly towards the front of the machine, a pair of cam levers disposed on the front of said support, a lever with a cam roller to cooperate with the peripheral cam of said disk, and connections from said lever to the cam levers whereby the slideway is moved to the rear on the up=troke, coacting as specified.

In a structure of the class described, the combination with a suitable base and rigid supporting frame arm, of upper and lower clamps, parallel arms extending from the said clamps and connected at their rear ends by a cross-shaped connecting arm, .a vertical upwardly projecting arm parallel to the cross-"haped connectingarm with a parallel link connecting the upper end thereof to the said upper clamp, a horizontal link slotted at its forward end disposed parallel to the cross arm of the said onnecting arm and pivoted at its rear end to the said frame arm. upwardly extending parallel links connecting the cross portion of the said cross arm to the aid horizontal link. an adjusting disk with a wrist pin engaging the said slot supported on a suitable shaft stub in the said frame arm, a worm gear on the said shaft, a worm for adjusting the same with an axially disposed rod in said frame arm to compensate for the adjustment of the said running gear means, coacting as specified.

3. In a structure of the cla-"s described, the combination with a suitable base and rigid supporting frame arm, of upper and lower clamps, parallel arms extending from the said clamps and connected at their rear ends by a cross-shaped connecting arm, a vertical upwardly projecting arm parallel to the eross-shaped connecting arm with a parallel link connecting the upper end thereof to the said upper clamp, a horizontal link slotted at itsforward end disposed parallel to the cross arm of the said connecting arm and pivoted at its rear end to the said frame arm, upwardly extending parallel links connecting the cross portion of.,the .said,cross arm to the said horizon-- tallinkpanadjusting dis-k with a wrist pin engaging the said slotsupported on a suitable shaft stub in the said frame arm, and means to adjust said disk, coacting as specified.

4. In a structure of the class described, the combination with a suitable base and rigid supporting frame arm, of upper and lower clamps, parallel arms extending from the said clampsand connected at their rear ends by a cross-shaped connecting arm, a vertical upwardly projecting arm parallel to the cross-shaped connecting arm with a parallel link connectingthe upper-end thereof to the said upper clamp, a horizontal link disposed parallel to the cross arm of the said connecting arm and pivoted at its rear end to the said frame arm, upwardly extending parallel links connecting the cross portion of the said cross arm to the said horizontal link, means to adjust said horizontal link, a worm gear on the said shaft, a worm for adjusting the same with an axially disposed rod extending to the front of the said machine, a vertical guiding recess in the upper end of the said frame arm andadjustable guides supported in the base of the machine and in said frame arm .to compensate for the adjustment of the said running gear means, coacting as specified.

5. In a structure of the class described. the combination with a suit-able base and rigid supporting frame arm, of upper and lower clamps, arms and connections between said clamps with means for adjusting the same to vary the angle of the saw or tile. a vertical guiding recess in the upper end of the said frame arm, a guiding slide-way adjustable therein. a slide bar slum-k for the said upper cliamp playing freely in the said adjustable slideway, a spring holding said guide bar-yieldingl-y towards the front of the machine, adownwardly depending shank from the said lower clamp, a driving disk with a peripheral cam, an adjustable wrist pin, a pitman connecting the saidwrist pin to the said shank, a slide connected to the said shank, a yieldingly adjustable slideway, a support for the said slideway adjust-ably connected to the interior of said machine, springs for holding the said slideway yieldingly towards the front of the machine. a pair of cam levers disposed on the front of said support, a lever with a cam roller to cooperate with the peripheral cam of said disk, and connections from said lever to the cam levers whereby the slideway is moved to the rear on the upstroke, coacting;

man connecting the said wrist/pin to the said shank, a slide connected to the said shank. a yieldingly adjustable slidewayfa support for the said slideway connected to the interior of said machine, springs for holding the said slideway yieldingly towards the front of the machine, a pair of cam levers disposed on the front-of said sup-.

port, a lever with a cam roller to cooperate with the peripheral cam of said disk, and connections from said lever to the cam levers whereby the slideway is moved to the rear on the upstroke, coacting as specified.

7. In a structure of the class described, the combination with a suitable base and rigid supporting frame arm. of upper and lower clamps, arms and connections between said clamps with means for adjusting the same to vary the angle of the saw or file, a vertical guiding recess in the upper end of the said frame arm, a guiding slideway adjustable therein. a slide bar shank for the said upper clamp playing freely in the said adjustable slideway, a spring holding said guide bar yieldingly towards the front of the machine, a downwardly depending shank from the said-lower clamp, a driving disk with a peripheral cam and wrist pin, a pitman connecting the said wrist pin to the said shank, a slide connected to the said shank, a yieldingly adjustable slideway, a support for the said slideway adjustably connected to the interior of said machine, springs for holding the said slideway yieldingly towards the front of the machine, a pair of cam levers disposed on the front of said support, a lever with a cam roller to cooperate with the peripheral cam of said disk, and connections from said lever to the cam levers whereby the slideway is moved to the rear on the upstroke, coacting as specified.

- 8. In a structure of the class described, the combination with the upper and lower cla mps,-of'a pair of parallel arms, the front ends piy'oted to the said clamps and the rear ends pivoted to a supporting cross arm, an upwardly extending cross bar parallel to the said supporting cross arm, and a'link parallel to the said arms connecting the upwardly projecting end of said cross arm to the upper clamp to maintain the same in parallel relation.

In a structure of the class described, the combination of the frame with a crossshapedsupporting cross arm, upper and lower clamps, a pair of parallel arms, the front ends pii'oted to thesaid clamps and the rear ends pivoted toa cross-shaped supporting cross arm, and'vertical parallel links carrying the said supporting cross arm.

10. In a structure of the class described, the combiiiation of the-frame with a crossshaped supporting cross arm, upper and lower clamps, a air of parallel arms, the frontends pivote to the said clamps and the rear ends pivoted to a cross-shaped support-- ing cross arm, vertical parallel links carrying the said supporting cross arm, a horizon tal link connecting the said vertical links containing a longitudinal slot, a disk with a wristpin arranged in said slot, a worm gear connected to said disk to actuate the same,

and an adjusting worm with connections to the front of the machine to vary the angle thereof.

11. In a structure of the class described, the combination of the framewith a crossshaped supporting cross arm, upper and lower clamps, a pair of parallel arms, the front ends pivoted to the said clamps and the rear ends pivoted to a cross-shaped supporting cross arm, vertical parallel links carrying the said supporting cross arm, a horizontal link connecting the said vertical links containing a longitudinal slot, :1 disk with a wrist pin arranged in said slot, and means for adjusting the disk.

12. In a structure of the class described, the combination of the frame with a crossshaped supporting cross arm, upper and lower clamps, a pair of parallel arms, the front ends pivoted to the said clamps and the rear ends pivoted to a cross-shaped sup porting cross arm, vertical parallel links carrying the said supporting cross arm, and means for adjusting said parallel links to vary the tilt of the clamps.

13. In a structure of the class described comprising upper and lower clamps, the combination with the upper clamp, of an arm connected thereto, and a link connection to the said clamp parallel to the said arm with pivotal connections for maintaining the same in parallel relation whereby the clamp is maintained upright.

14. In a machine of the class described, the combination with the lower clamp, of a shank therefor with a suitable guiding slide connected thereto, a driving disk with peripheral cam. and a pitman connection therefrom to the said clamp, an adjustable yielding slideway for the slide of said clamp, an adjustable support for the said slideway with a suitable recess for the said slideway permitting front and rear movement thereof, sprinigs disposed in the said support to hold the s ideway toward the front of the machine, cam levers to the rear to react and move the said support towards the rear of the machine, a lever connected to the said cam levers with a suitable cam roller to cooperate with the peripheral cam of the said disk whereby the clamp is relieved on its return stroke and carried to the work on the cutting stroke.

15. In a machine of the class described, the combination with the lower clamp, of a shank therefor with a suitable guiding slide connected thereto, a driving disk with peripheral cam and a pitman connection therefrom to the said clamp, 21 support for the said slideway with a, suitable recess for the said slideway permit-ting front and rear movement thereof, springs disposed in the said support to hold the slideway toward the front of the machine, cam levers to the rear to react and move the said support towards the rear of the machine, a lever connected to the said cam levers with a suitable cam hand.

BENSON A. YARRINGTON. 

